Alright, it’s not really quick and dirty anymore. Uses parallax mapping. Doesn’t cost a lot fps-wise. You could probably use this as a fur effect as well with some adjusting and careful UV mapping.
Added subsurface lighting.
Made grass finer.
You can make your own noise maps to get chunky grass or fine fur as needed.
Added user control to select mip bias for colour bleed based on fibre length.
Added edge masking for fluffy edges.
Added many fur controls and lighting/colour/translucency options.
Added ability to shave or grow fur using vertex painting.
Added texture map support for base, mid and tip fibre colours
Added fresnel colour for flat shading mode, good for simulating light coloured fur
Added translucency control
Looks fuzzy and delightful on landscapes:
Areas of grass even intersect nicely:
Landscape layers work pretty good with it
Finer grass and subsurface lighting makes for a Dr Seuss vibe